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Finding the Fourth Proportional to 189,000.80, 283,501.20 and 122,078.60

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Solution

The fourth proportional to 189,000.80, 283,501.20 and 122,078.60 is: 183,117.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,000.80 : 283,501.20 = 122,078.60 : x
  2. Step 2: Convert to fraction form
    189,000.80/283,501.20 = 122,078.60/x
  3. Step 3: Cross multiply
    189,000.80x = 283,501.20 × 122,078.60
  4. Step 4: Simplify right side
    189,000.80x = 34,609,429,594.32
  5. Step 5: Solve for x
    x = 34,609,429,594.32/189,000.80
  6. Step 6: Final answer
    x = 183,117.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.